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Finding the Fourth Proportional to 646,241.46, 891,232.63 and 404,546.05

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Solution

The fourth proportional to 646,241.46, 891,232.63 and 404,546.05 is: 557,910.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    646,241.46 : 891,232.63 = 404,546.05 : x
  2. Step 2: Convert to fraction form
    646,241.46/891,232.63 = 404,546.05/x
  3. Step 3: Cross multiply
    646,241.46x = 891,232.63 × 404,546.05
  4. Step 4: Simplify right side
    646,241.46x = 360,544,640,097.61
  5. Step 5: Solve for x
    x = 360,544,640,097.61/646,241.46
  6. Step 6: Final answer
    x = 557,910.10

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.